Yuan LW, Tang W, Li YG, Makuuchi M.
Des-gamma-carboxy-prothrombin expression in hepatocellular carcinoma and its clinical significance. Shijie Huaren Xiaohua Zazhi
2004; 12(7): 1543-1545 [DOI: 10.11569/wcjd.v12.i7.1543
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AIM: To study the expression of des-gamma-carboxy-prothrombin (DCP) in hepatocellular carcinoma (HCC) tissues and its clinical significance.
METHODS: Cancerous and non-cancerous tissue samples prepared from 92 cases of HCCs, 7 metastatic HCCs and 19 chronic liver diseases were subjected to immunohistochemical staining for tissue DCP. Relation between DCP expression in cancerous and non-cancerous tissues and clinical parameters of HCC was analyzed.
RESULTS: The DCP expression in cancerous tissues (73.9%) was significantly higher than that in non-cancerous tissues (26.1%, P < 0.01). The DCP expression in cancerous and non-cancerous tissues of HCC was significantly higher than that in non-cancerous tissues of metastatic HCCs and chronic liver diseases (3.5%, P < 0.01). Positive DCP staining in cancerous tissues was more frequently in cases of infiltrative growth than in cases of expansive growth (P = 0.049), and was more frequently in cases where no capsule formation was noted than that in cases with capsule formation (P = 0.037). The DCP expression in non-cancerous tissues of HCC with size >5 cm was significantly higher than that of the size ≤ 5 cm (P = 0.049). Positive DCP staining in non-cancerous tissue was more frequently in cases of tumors larger than 5 cm than in cases of tumors that were 5 cm or smaller (P = 0.049). DCP expression in non-cancerous tissues of patients who were either negative for both hepatitis markers or positive for the HBsAg was significantly higher than the patients who were positive for the HCVAb (P < 0.01). The rate of positive DCP staining in non-cancerous tissues was also significantly lower in patients with liver cirrhosis than that in patients with chronic hepatitis (P < 0.05). No correlations were found between DCP expression in cancerous and non-cancerous tissues and other clinical parameters.
CONCLUSION: DCP may be an important marker in liver carcinogenesis, but DCP in tissues cannot be considered as a prognostic factor for HCC.